While I'd rather give money to help the relief effort, there are other ways people can make a difference. As anyone who owns a television, radio, or computer knows there are thousands who have been left homeless due to Katrina's merciless fury. Organizations are attempting to offer assistance in any way possible.
This website provides a means for communicating a willingness to house individuals or families who have lost everything: tacitus.org. I realize this isn't something most people would be comfortable doing but if you can find it in your heart or means to help, please do.